Exercise device



FIG. 1 is a bottom, front, and right side perspective view of an exercise device, according to the present invention;

FIG. 2 is a rear view of the exercise device of FIG. 1;

FIG. 3 is a front view of the exercise device of FIG. 1;

FIG. 4 is a left side view of the exercise device of FIG. 1;

FIG. 5 is a right side view of the exercise device of FIG. 1; and,

FIG. 6 is a top view of the exercise device of FIG. 1.

The portions of the disclosure that are shown in broken lines form no part of the claimed design. 

The ornamental design for an exercise device, as shown and described. 